Multi-station multi-specification heat shrink tube penetrating and sleeving equipment

Abstract

The utility model relates to the technical field of heat shrink tube processing equipment, in particular to multi-station multi-specification heat shrink tube penetrating and sleeving equipment. Comprising a first feeding mechanism which comprises a vibration disc configured to contain a to-be-sleeved heat shrink tube and a material conveying channel connected with the vibration disc; the second feeding mechanism comprises a heat shrink tube coiling frame and a traction unit, the heat shrink tube coiling frame is configured to enable the heat shrink tube to be wound on the heat shrink tube coiling frame, and the traction unit is configured to convey the heat shrink tube from the heat shrink tube coiling frame to a tube cutting station; the pipe cutting mechanism is configured to cut the heat shrink pipe conveyed by the second feeding mechanism at a pipe cutting station; the heat shrink tube transferring mechanism is configured to transfer the heat shrink tube on the material conveying channel or the heat shrink tube subjected to the cutting procedure to a sleeving station; and the sleeving mechanism is configured to sleeve the surface of the cable with the heat shrink tube at the sleeving station. By adopting the equipment provided by the utility model, the problem of insufficient flexibility caused by a single feeding mechanism can be avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of heat shrink tubing processing equipment, and in particular to a multi-station, multi-specification heat shrink tubing insertion equipment. Background Technology

[0002] In the fields of electronics, electrical engineering, and machinery manufacturing, heat shrink tubing is widely used as an important insulating and protective material for circuit protection, marking, and preventing short circuits. However, existing heat shrink tubing installation equipment has revealed a series of problems and limitations in practical applications, severely restricting the improvement of production efficiency and quality. First, current heat shrink tubing installation equipment is usually equipped with only one type of feeding mechanism, such as a vibratory feeder or a reel-type tape reel. This single feeding method is extremely inconvenient when dealing with heat shrink tubing of different specifications and types, such as granular bulk heat shrink tubing versus reel-type heat shrink tubing. Vibratory feeders are suitable for bulk heat shrink tubing parts, but cannot effectively handle reel-type heat shrink tubing, and vice versa. This limitation of the feeding mechanism means that when it is necessary to switch to different packaging forms of heat shrink tubing during production, the entire feeding device must be replaced. This not only increases the complexity of operation and labor costs, but also greatly reduces production efficiency, making it difficult for enterprises to respond quickly and flexibly to orders with multiple varieties and small batches.

[0003] Secondly, for reel-type heat shrink tubing, existing equipment lacks the design of multiple heat shrink tubing traction stations, making it unable to simultaneously adapt to cutting heat shrink tubing of various sizes into segments. In actual production, heat shrink tubing of different specifications needs to be precisely cut according to specific usage requirements to meet the needs of different lengths and diameters. However, because the equipment is not equipped with multiple traction stations, whenever a different diameter heat shrink tubing is needed, the operator must manually adjust the equipment, including changing the cutting blades, adjusting the traction speed and position, etc. This process is not only time-consuming and labor-intensive, but also prone to human error leading to a decrease in cutting accuracy, which in turn affects product quality and consistency. In addition, such frequent equipment adjustments may also lead to excessive wear and tear on the equipment and an increased failure rate, increasing equipment maintenance costs and downtime, further reducing the overall production efficiency of the enterprise. Utility Model Content

[0004] To address the problem of insufficient flexibility caused by the existing heat shrink tubing insertion equipment having only a single feeding mechanism, this utility model provides a multi-station, multi-specification heat shrink tubing insertion equipment.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A multi-station, multi-specification heat shrink tubing insertion device includes:

[0007] The first feeding mechanism includes a vibratory feeder configured to accommodate heat shrink tubing to be fitted, and a material transfer channel connected to the vibratory feeder.

[0008] The second feeding mechanism includes a heat shrink tubing reel and a traction unit. The heat shrink tubing reel is configured to wind the heat shrink tubing onto the heat shrink tubing reel, and the traction unit is configured to transport the heat shrink tubing from the heat shrink tubing reel to the tubing cutting station.

[0009] A tube cutting mechanism is configured to cut the heat shrink tubing conveyed by the second feeding mechanism at the tube cutting station;

[0010] The heat shrink tubing transfer mechanism is configured to transfer heat shrink tubing or heat shrink tubing that has completed the cutting process from the material transfer channel to the tubing station.

[0011] A sleeve mechanism is configured to pass the heat shrink tubing onto the surface of the cable at a sleeve station.

[0012] In one embodiment, the traction unit includes several tube delivery channels to accommodate the delivery of heat shrink tubing of different specifications.

[0013] In one embodiment, the traction unit is equipped with a fiber optic sensor for material shortage detection.

[0014] In one embodiment, the pipe cutting mechanism includes a first driving unit, a cutting unit, and a second driving unit. The first driving unit drives the cutting unit to move back and forth in a first direction, and the second driving unit drives the cutting unit to move back and forth in a second direction.

[0015] The first direction and the second direction are perpendicular to each other.

[0016] In one embodiment, a third feeding mechanism is also included, which is configured to deliver the cable to the sleeve station.

[0017] In one embodiment, the third feeding mechanism includes a cable transfer unit configured to transport cables to a sleeve station, and a cable clamping unit disposed on the cable transfer unit.

[0018] In one embodiment, the heat shrink tubing transfer mechanism includes a heat shrink tubing clamping unit, a third drive unit configured to drive the heat shrink tubing clamping unit to reciprocate along a first direction, and a fourth drive unit configured to drive the heat shrink tubing clamping unit to reciprocate along a second direction.

[0019] The first direction and the second direction are perpendicular to each other.

[0020] In one embodiment, the sleeve mechanism includes a heat shrink tubing receiving unit, which is equipped with a cable guiding unit for guiding and positioning the cable end so that the cable is aligned with the heat shrink tubing after it has been swollen.

[0021] In one embodiment, the cable guiding unit has a threading channel in the horizontal direction for guiding the cable into the heat shrink tubing, and the inner diameter of the threading channel near the heat shrink tubing receiving unit is larger than the inner diameter of the threading channel near the cable clamping unit.

[0022] In one embodiment, the inner diameter of the threading channel near the cable insertion end gradually decreases from the outside to the inside.

[0023] Based on the above, compared with the prior art, the multi-station, multi-specification heat shrink tubing feeding equipment provided by this utility model is equipped with a first feeding mechanism and a second feeding mechanism, thereby avoiding the problem of insufficient flexibility caused by a single feeding mechanism.

[0024] Other features and beneficial effects of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other beneficial effects of this invention can be realized and obtained through the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figure.

[0026] Figure 1 The diagram shown is a structural schematic of the multi-station, multi-specification heat shrink tubing insertion device provided in this embodiment of the present invention;

[0027] Figure 2 The diagram shown is a structural schematic diagram from another perspective of the multi-station, multi-specification heat shrink tubing insertion equipment provided in this embodiment of the present invention;

[0028] Figure 3 The diagram shown is a structural schematic of the first feeding mechanism provided in an embodiment of this utility model;

[0029] Figure 4 The diagram shown is a structural schematic of the second feeding mechanism provided in an embodiment of this utility model;

[0030] Figure 5 The image shown is a front view of the second feeding mechanism provided in this embodiment of the present invention;

[0031] Figure 6 The figure shown is a top view of the second feeding mechanism provided in this embodiment of the present invention;

[0032] Figure 7 The diagram shown is a structural schematic of the pipe cutting mechanism provided in an embodiment of this utility model;

[0033] Figure 8 The image shown is a side view of the pipe cutting mechanism provided in an embodiment of this utility model;

[0034] Figure 9 The diagram shown is a structural schematic of the heat shrink tubing transfer mechanism provided in this embodiment of the present invention.

[0035] Figure 10 The image shown is a side view of the heat shrink tubing transfer mechanism provided in this embodiment of the present invention.

[0036] Figure 11 The diagram shown is a partial structural diagram of the heat shrink tubing transfer mechanism provided in this embodiment of the present invention.

[0037] Figure 12 The image shown is a side view of the sleeve mechanism provided in an embodiment of this utility model;

[0038] Figure 13 The diagram shown is a structural schematic of the sleeve mechanism provided in an embodiment of this utility model;

[0039] Figure 14 The diagram shown is a structural schematic of the third feeding mechanism provided in an embodiment of this utility model.

[0040] Figure label:

[0041] 10. Frame; 20. First feeding mechanism; 21. Vibratory feeder; 22. Material transfer channel; 30. Second feeding mechanism; 31. Heat shrink tubing reel holder; 311. Support rod; 312. Heat shrink tubing reel assembly; 3121. Connecting rod; 3122. Horizontal shaft; 3123. Heat shrink tubing feeding tray; 32. Traction unit; 321. First tubing feeding channel; 322. Second tubing feeding channel; 323. First fiber optic sensor; 324. Second fiber optic sensor; 40. Tube cutting mechanism; 41. Cutting unit; 42. 43. First drive unit; 50. Second drive unit; 51. Heat shrink tubing transfer mechanism; 52. Heat shrink tubing clamping unit; 53. Third drive unit; 54. Long-distance drive unit; 55. Micro-distance drive unit; 56. Fourth drive unit; 67. Heat shrink tubing transfer unit; 68. Tubing mechanism; 69. Heat shrink tubing receiving unit; 60. Cable straightening unit; 611. Cable threading channel; 62. Cable guide unit; 73. Third feeding mechanism; 74. Cable transfer unit; 75. Cable clamping unit. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The technical features designed in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0043] In the description of this utility model, it should be noted that all terms used in this utility model (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains, and should not be construed as limiting this utility model; it should be further understood that the terms used in this utility model should be understood to have the same meaning as those in the context of this specification and in the relevant field, and should not be understood in an idealized or overly formal sense, except as expressly defined in this utility model.

[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] Please refer to Figure 1 and Figure 2 The multi-station, multi-specification heat shrink tubing fitting equipment provided in this embodiment includes: a frame 10, a first feeding mechanism 20, a tubing cutting mechanism 40, a heat shrink tubing transfer mechanism 50, a tubing fitting mechanism 60, and a second feeding mechanism 30.

[0046] The frame 10 can adopt a style known to those skilled in the art, and its main purpose is to serve as a carrier for each mechanism.

[0047] Please refer to Figures 1 to 3 The first feeding mechanism 20 includes a vibratory plate 21 configured to accommodate heat shrink tubing to be fitted, and a material transfer channel 22 connected to the vibratory plate 21.

[0048] In this embodiment, the vibratory feeder 21 automatically transports the heat shrink tubing from the hopper without manual intervention, greatly improving production efficiency and reducing labor costs. Furthermore, in a preferred embodiment of this invention, the width of the material transport channel 22 is slightly larger than the diameter of the heat shrink tubing. Thus, when heat shrink tubing cut to a predetermined length or in bulk enters the material transport channel 22 from its input end under the drive of the vibratory feeder 21, the heat shrink tubing, constrained by the transport channel, always moves along the length of the transport channel and is guided by the inner wall of the material transport channel 22, thereby achieving automatic feeding and sorting of the heat shrink tubing.

[0049] Please refer to Figure 1 , Figures 4 to 6 The second feeding mechanism 30 includes a heat shrink tubing reel 31 and a traction unit 32. The heat shrink tubing reel 31 is configured to wind the heat shrink tubing onto the heat shrink tubing reel 31, and the traction unit 32 is configured to transport the heat shrink tubing from the heat shrink tubing reel 31 to the tube cutting station.

[0050] In this embodiment, the heat shrink tubing reel holder 31 includes a support rod 311 and a heat shrink tubing reel assembly 312. The support rod 311 is disposed on the top plate surface formed by the frame 10, and the heat shrink tubing reel assembly 312 is rotatably disposed on the support rod 311. The heat shrink tubing reel assembly 312 is used for winding heat shrink tubing. Further, the heat shrink tubing reel assembly 312 includes a connecting rod 3121, a horizontal shaft 3122, and a heat shrink tubing feeder 3123. The connecting rod 3121 is disposed on the support rod 311; the horizontal shaft 3122 is fixed on the connecting rod 3121; and the heat shrink tubing feeder 3123 is rotatably disposed on the outer periphery of the horizontal shaft 3122. In a preferred embodiment of this utility model, one or more heat shrink tubing feeders 3123 may be disposed on the horizontal shaft 3122. For example, please refer to... Figure 3 The connecting rod 3121 is located between the left heat shrink tubing feeder 3123 and the right heat shrink tubing feeder 3123. The left and right heat shrink tubing feeders 3123 are connected by a horizontal shaft 3122, so that multiple heat shrink tubing rolls can be wound at the same time.

[0051] In this embodiment, the traction unit 32 is configured to transport heat shrink tubing from the heat shrink tubing reel 31 to the tubing cutting station. The traction unit 32 includes several tubing delivery channels to accommodate the transport of heat shrink tubing of different specifications. The traction unit 32 includes a first tubing delivery channel 321 and a second tubing delivery channel 322, wherein the heat shrink tubing diameter adapted to the first delivery channel 321 is smaller than that adapted to the second delivery channel 322. This allows for fine-tuning of the delivery channels according to different heat shrink tubing diameters, reducing adjustment time. Furthermore, one of the delivery channels can be a fixed specification for commonly used tubing diameters, while the other delivery channel is used for traction of heat shrink tubing of special diameters. Of course, the traction and drive-related rollers, drive units, etc., not shown in the figure, can be those well known to those skilled in the art, and will not be elaborated upon here.

[0052] Please refer to Figure 7 The traction unit 32 is equipped with a fiber optic sensor for material shortage detection. The high sensitivity and anti-interference characteristics of the fiber optic sensor enable it to adapt to dynamic cutting environments and detect material shortage in real time, ensuring continuous operation of the equipment. Taking the illustrated embodiment as an example, a first fiber optic sensor 323 and a second fiber optic sensor 324 can be respectively installed on the corresponding first feeding channel 321 and second feeding channel 322 to monitor whether material is insufficient.

[0053] Please refer to Figure 1 and Figure 8 The tube cutting mechanism 40 is configured to cut the heat shrink tubing conveyed by the second feeding mechanism 30 at the tube cutting station;

[0054] In this embodiment, the tube cutting mechanism 40 includes a cutting unit 41, a first driving unit 42, and a second driving unit 43. The first driving unit 42 drives the cutting unit 41 to move back and forth in a first direction, and the second driving unit 43 drives the cutting unit 41 to move back and forth in a second direction; the first direction and the second direction are perpendicular to each other. Taking the first direction as the horizontal direction (i.e., the X-axis direction) and the second direction as the vertical direction (i.e., the Y-axis direction) as an example, the first driving unit 42 can drive the cutting unit 41 to move in the horizontal direction, and the second driving unit 43 can drive the cutting unit 41 to move in the vertical direction. This not only facilitates the adjustment of the cutting position of the cutting unit 41 for heat shrink tubing of different diameters, but also adapts to the cutting of heat shrink tubing at different cutting stations under multi-station conditions.

[0055] In another embodiment of the present invention, a storage groove is provided in front of the tube cutting mechanism 40 to store the heat shrink tubing that cannot be transferred out in time after cutting, so that the part of the heat shrink tubing that has been cut can be sent into the first feeding mechanism 20 later.

[0056] Please refer to Figure 1 , Figures 9 to 11 The heat shrink tubing transfer mechanism 50 is configured to transfer heat shrink tubing or heat shrink tubing that has completed the cutting process on the material transfer channel 22 to the tubing station.

[0057] The heat shrink tubing transfer mechanism 50 includes a heat shrink tubing clamping unit 51, a third drive unit 52 configured to drive the heat shrink tubing clamping unit 51 to move back and forth along a first direction, and a fourth drive unit 53 configured to drive the heat shrink tubing clamping unit 51 to move back and forth along a second direction; the first direction and the second direction are perpendicular to each other. Taking the first direction as the horizontal direction (i.e., the X-axis direction) and the second direction as the vertical direction (i.e., the Y-axis direction) as an example, the third drive unit 52 can drive the heat shrink tubing clamping unit 51 to move in the horizontal direction, and the fourth drive unit 53 can drive the heat shrink tubing clamping unit 51 to move in the vertical direction, thereby enabling the heat shrink tubing transfer mechanism 50 to more flexibly acquire heat shrink tubing and transfer it to the tubing station;

[0058] In a preferred embodiment of the utility model, the third driving unit 52 includes a long-distance driving unit 521 and a micro-distance driving unit 522 disposed on the driving unit. The long-distance driving unit 521 can drive the heat shrink tubing clamping unit 51 to move with a large span in the horizontal direction, while the micro-distance driving unit 522 further drives the heat shrink tubing clamping unit 51 to make micro-distance adjustments near the tubing station to more accurately align the cable.

[0059] In another preferred embodiment of the present invention, the heat shrink tubing transfer machine further includes a heat shrink tubing transfer unit 54 configured to transfer heat shrink tubing on the material transfer channel 22 to the heat shrink tubing clamping unit 51. Since a single heat shrink tubing clamping unit 51 needs to simultaneously satisfy the first feeding mechanism 20 and the second feeding mechanism 30, it is easy to cause overload or low transfer efficiency. Therefore, by further setting up the heat shrink tubing transfer unit 54, the moving distance of the heat shrink tubing clamping unit 51 can be shortened, and the heat shrink tubing transfer unit 54 can make up for part of the moving distance. This is because the heat shrink tubing coil frame 31 is generally large and not easy to place inside the frame 10, resulting in a long distance between the incoming material and the tubing station. If only a single heat shrink tubing clamping unit 51 is used for transfer operation, the section efficiency will be low. Therefore, by setting up the heat shrink tubing transfer unit 54, the processing efficiency is greatly improved. More preferably, the heat shrink tubing transfer unit 54 includes a gripping gripper located at the proximal end of the heat shrink tubing at the gripping point, so that sufficient space is left at the distal end for the heat shrink tubing gripping unit 51 to grip it.

[0060] It should be noted that there are various forms of moving structures in mechanical equipment that achieve linear motion, such as ball screws, sliding guides, and slide cylinders, each with its own characteristics and applicable scenarios. For example, ball screws, due to their high precision and low friction characteristics, are often used for precision positioning in CNC machine tools; sliding guides are suitable for automated production lines requiring heavy load support; and slide cylinders, with their rapid response capabilities, are mostly used for simple linear motion scenarios. Therefore, in practical applications, those skilled in the art can adapt the selection of drive units such as the first drive unit, second drive unit, third drive unit, and fourth drive unit mentioned above based on factors such as the equipment's precision requirements, load capacity, speed requirements, cost budget, and installation space to ensure the equipment's performance and reliability. Furthermore, technicians may also optimize the design or combine these moving structures according to specific needs to achieve the best performance, which will not be elaborated upon here.

[0061] Please refer to Figure 1 , Figure 12 and Figure 13 The sleeve mechanism 60 is configured to insert the heat shrink tubing onto the surface of the cable at the sleeve station.

[0062] In this embodiment, the sleeve mechanism 60 includes a heat shrink tubing receiving unit 61 and a cable guiding unit 62 configured to insert a cable into the heat shrink tubing receiving unit 61 so that the heat shrink tubing is fitted onto the surface of the cable. The heat shrink tubing receiving unit 61 is equipped with a cable guiding unit 611 for guiding and positioning the cable end to align the cable with the rounded heat shrink tubing. The cable guiding unit 611 has a horizontally oriented threading channel 6111 for guiding the cable into the heat shrink tubing. The cable guiding unit 62 is equipped with a cylinder clamp for securing the cable. Preferably, the inner diameter of the threading channel 6111 near the heat shrink tubing receiving unit 61 is larger than the inner diameter of the threading channel 6111 near the cable clamping unit 72. This results in a larger diameter on the heat shrink tubing side, which can accommodate part of the heat shrink tubing, while the cable side has a smaller diameter, allowing the cable to be inserted. More preferably, the inner diameter of the threading channel 6111 near the cable insertion end gradually decreases from the outside to the inside. By setting the inner diameter of the cable insertion end to a funnel-shaped structure that gradually decreases from the outside to the inside, it can facilitate the insertion of the cable.

[0063] In a preferred embodiment of the present invention, the heat shrink tubing receiving unit 61 further includes a rounding component for adjusting the roundness of the heat shrink tubing. The rounding component may include upper and lower suction heads connected to an external air pressure device, which together provide rounding air pressure for the heat shrink tubing. Of course, the rounding component may also be composed of other structures.

[0064] Please refer to Figure 1 and Figure 14The multi-station, multi-specification heat shrink tubing equipment also includes a third feeding mechanism 70, which is configured to transport cables to the tubing station.

[0065] In this embodiment, the third feeding mechanism 70 includes a cable transfer unit 71 configured to transport the cable to the sleeve station, and a cable clamping unit 72 disposed on the cable transfer unit 71. The cable transfer unit 71 transfers the cable from the previous process to the current heat shrink tubing insertion process, while the cable clamping unit 72 is used to fix the cable. The cable clamping unit 72 is a cylinder gripper.

[0066] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this utility model can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.

[0067] Although this article uses a variety of terms such as frame, first feeding mechanism, vibratory feeder, material transfer channel, second feeding mechanism, heat shrink tubing reel rack, support rod, heat shrink tubing reel assembly, connecting rod, horizontal axis, heat shrink tubing feeding tray, traction unit, first tube feeding channel, second tube feeding channel, first fiber optic sensor, second fiber optic sensor, tube cutting mechanism, cutting unit, first drive unit, second drive unit, heat shrink tubing transfer mechanism, heat shrink tubing clamping unit, third drive unit, long-distance drive unit, micro-distance drive unit, fourth drive unit, heat shrink tubing transfer unit, sleeve mechanism, heat shrink tubing receiving unit, cable guiding unit, cable threading channel, cable introduction unit, third feeding mechanism, cable transfer unit, and cable clamping unit, the possibility of using other terms cannot be excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model; the terms "first," "second," etc. (if present) in the specification, claims, and drawings of the embodiments of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1.A multi-station multi-specification heat shrink tube sleeving device, comprising: a first feeding mechanism comprising a vibrating tray configured to accommodate heat shrink tubes to be sleeved and a material conveying channel connected to the vibrating tray; a second feeding mechanism comprising a heat shrink tube spooling frame configured to have the heat shrink tubes wound thereon and a traction unit configured to convey the heat shrink tubes from the heat shrink tube spooling frame to a cutting station; a cutting mechanism configured to cut the heat shrink tubes conveyed by the second feeding mechanism at the cutting station; a heat shrink tube transfer mechanism configured to transfer the heat shrink tubes on the material conveying channel or the heat shrink tubes after the cutting process to a sleeving station; and a sleeving mechanism configured to sleeve the heat shrink tubes to the surface of a cable at the sleeving station. 2.The multi-station multi-specification heat shrink tube sleeving device according to claim 1, wherein the traction unit comprises a plurality of pipe conveying channels to adapt to the conveying of heat shrink tubes of different specifications. 3.The multi-station multi-specification heat shrink tube sleeving device according to claim 1, wherein the traction unit is provided with an optical fiber sensor for material shortage detection. 4.The multi-station multi-specification heat shrink tube sleeving device according to claim 1, wherein the cutting mechanism comprises a first driving unit, a cutting unit and a second driving unit, the first driving unit drives the cutting unit to move back and forth in a first direction, and the second driving unit drives the cutting unit to move back and forth in a second direction; and the first direction and the second direction are perpendicular to each other. 5.The multi-station multi-specification heat shrink tube sleeving device according to claim 1, further comprising a third feeding mechanism configured to convey the cable to the sleeving station. 6.The multi-station multi-specification heat shrink tube sleeving device according to claim 5, wherein the third feeding mechanism comprises a cable transfer unit configured to convey the cable to the sleeving station and a cable clamping unit provided on the cable transfer unit. 7.The multi-station multi-specification heat shrink tube sleeving device according to claim 1, wherein the heat shrink tube transfer mechanism comprises a heat shrink tube clamping unit, a third driving unit configured to drive the heat shrink tube clamping unit to move back and forth in a first direction, and a fourth driving unit configured to drive the heat shrink tube clamping unit to move back and forth in a second direction; and the first direction and the second direction are perpendicular to each other. 8.The multi-station multi-specification heat shrink tube sleeving device according to claim 1, the sleeving mechanism comprises a heat shrink tube receiving unit, and the heat shrink tube receiving unit is provided with a cable alignment unit configured to align the end of the cable with the heat shrink tube after suction. 9.The multi-station multi-specification heat shrink tube sleeving device according to claim 8, wherein the cable alignment unit is provided with a threading channel in the horizontal direction for guiding the cable to extend into the heat shrink tube, and the inner diameter of the threading channel near the heat shrink tube receiving unit is larger than the inner diameter of the threading channel near the cable clamping unit. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 10. The multi-station multi-specification heat shrink tubing apparatus of claim 9, wherein, the inner diameter of the threading passageway decreases gradually from outside to inside near the cable entry end.

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